/*
 * $Id: EventSet.java 1259 2007-01-09 14:23:47Z tcoupaye $
 *
 * Behavior Protocols extensions for static and runtime checking
 * developed for the Julia implementation of Fractal.
 *
 * Copyright (C) 2006
 *    Formal Methods In Software Engineering Group
 *    Institute of Computer Science
 *    Academy of Sciences of the Czech Republic
 *
 * Copyright (C) 2006 France Telecom
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
 *
 * Contact: ft@nenya.ms.mff.cuni.cz
 * Authors: Jiri Adamek <adamek@nenya.ms.mff.cuni.cz>
 *
 */

package org.objectweb.fractal.bpc.staticchecker.preprocessor;

import java.util.Set;
import java.util.HashSet;
import java.util.Iterator;

/**
 * Stores a list of events in a set.
 */
public class EventSet {

	private Set set;
	
	public EventSet() {
		set = new HashSet();
	}
	
	public void add(String event) {
		set.add(event);
	}
	
	public String toString() {
		if (set.isEmpty()) {
			return "";
		} else {
			Iterator it = set.iterator();
			String result = (String)it.next();
			while(it.hasNext())
				result = result + ", " + (String)it.next();
			return result;
		}
	}
}
